William ii



(No Model.)

W. H. DRIGGS. BAND SEAT FOB PROJEG'IILES.

v1\I ,469,631. Patentedems,1892.1

'rares .Ntra l Arana* erica.

sANnesEAT Fon PROJ Ec'rlLes.

SPECIFICATION fel-ming pea ef Lettere :Patent No. 469,631', dated Fenway as, 1892. Application tiled December 1'7, 1891. Serial No. 415,384. (No model.) Patented in England January 15, 1892, No. 837.

To all whom it may concern.' l

Be it known that I, WILLIAM H. DRIGGs, a citizen of the United States, residing at Washington, District of Columbia, have invented certainnew and usefnl Improvementsin Band- .Seats for Projectiles,- (which I have patented shells and projectiles, but more especially to the process of banding Ithe same, and has for its objiect to provide simple .and efcient means for securi-ngethe band firml-yiu-place The improvem entsconsistin rolling, stamping, or pressing` into the body of a projectile a series of cross-lines or circles, into which the soft metal forming the band is forced by pressure, and of suen other details of construction as will be hereinafterfully described, and specifically pointed out in the claim.

Reference is had to the accompanying drawings, wherein the same parts are indicated by the same letters. l

Figure 1 represents a View of a shell or projectile having the grooves cut into the sur- Fig. 2 is a similar View of.

face of the shell. a slightly-modified form in whili the indentations are of circular form. f

A designates' a shell, having baud-seat B formed in the surface thereof and extending around its body in rear of the center. Within the band-seat B, I forni a series of grooves or indentations l), crossing each other at angles and forming a ltnurled seat for the band C,

as shown in Fig. l. The band (lis placed in theoseat'so kformed and subjected to pressure sufiicient to force the' lsoft metal of the band.V

into the interstices of the knurlin'g of the seat and thus secure the band firmly in position.`

In Fig. 2 I havel shown the linurling formed l upon thesurface of the shell, as at Q', lio groove being cut in the shell. 'In many 1nstances this will be found suiicient and will obviate the necessity of forming a groove VBy knurling't-he'band-seatandforcingthe metal vof the band into the interstices 0f the knurliug under pressure, as hereinbefore de scribed, l provide a simple means by which the bands upon shells and projectiles maybe secured firmlyand rigidly in place.

Having thus described my invention, what I claim, and desire'to secure by LettersPatent of the Unied States, isl The combination, with a projectile having its rear portion cylindrical and having a number of grooves or depressions rolled or pressed upon a part of the exterior surface of said cyl lindrical portion of saidprojectile, of a. band of soft metal mounted over said grooves and compressed so as to lit partly i said grooves, substantially as and for the purposes described.

In testimony whereof I affix mysignature in presence of two witnesses.

Y WILLIAM Il. DRIGGS.

` Witnesses: A

C. S. WHITMAN, A J oHN C. WILSON.

LLI 

